Home / 1,811.84-2,718-889.12

Finding the Fourth Proportional to 1,811.84, 2,718 and 889.12

Calculator

Solution

The fourth proportional to 1,811.84, 2,718 and 889.12 is: 1,333.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,811.84 : 2,718 = 889.12 : x
  2. Step 2: Convert to fraction form
    1,811.84/2,718 = 889.12/x
  3. Step 3: Cross multiply
    1,811.84x = 2,718 × 889.12
  4. Step 4: Simplify right side
    1,811.84x = 2,416,628.16
  5. Step 5: Solve for x
    x = 2,416,628.16/1,811.84
  6. Step 6: Final answer
    x = 1,333.80

Related Problems

Find fourth proportional to 905.92, 1,359 and 444.56
Half scale
Find fourth proportional to 3,623.68, 5,436 and 1,778.24
Double scale
Find fourth proportional to 1,812.84, 2,719.50 and 890.12
Similar ratio
Find fourth proportional to 2,717.76, 4,077 and 1,333.68
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.